Battery pole piece hot roll

Abstract

The utility model relates to a battery pole piece hot roller, and belongs to the technical field of battery production, the battery pole piece hot roller comprises a roller shaft, a roller sleeve, a first cover body, a second cover body, n flow channels, a first rotating shaft, a second rotating shaft and a filter cone, a first gap is formed between the roller sleeve and the roller shaft, and a second gap is formed between the first cover body and the roller shaft, a third gap is formed between the second cover body and the roller shaft, the n flow channels are separated from one another, the parts, located in the first gap, of the flow channels are spiral, and a filter cone is arranged in the liquid inlet channel of the first rotating shaft. According to the battery pole piece hot roller, it can be guaranteed that fluid media make full and uniform contact with the roller shaft and the roller sleeve, the temperature difference of the surface of the roller sleeve is reduced, impurities existing in the fluid media can be prevented from entering a flow to block a flow channel, and normal circulation of the fluid media is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a hot rolling roller for battery pole pieces. Background Art

[0002] Rolling is an essential process in lithium battery electrode manufacturing. Compared to cold roller rolling, hot roller pressing enhances the peel strength of the active material, improves the thickness uniformity of the electrode, and reduces the electrode rebound rate. Thermal oil-heated rollers transfer heat evenly throughout the rollers, resulting in a more uniform temperature distribution across the roller surface. Furthermore, the thermal oil can be recycled, reducing energy waste and saving energy costs over long-term operation compared to traditional heating methods.

[0003] Existing thermal oil heated rollers usually have a spiral design for the thermal oil flow path, which increases the length of the thermal oil flow path in the roller and the contact area with the inner wall of the roller, so that the thermal oil can more fully transfer heat to the roller.

[0004] However, by increasing the length of the heat transfer oil flow path in the roller, thereby increasing the contact area between the heat transfer oil and the roller and the heat exchange time, the heat of the heat transfer oil will be gradually absorbed during the flow of the heat transfer oil, causing the temperature from the oil inlet to the oil outlet of the roller to gradually decrease, resulting in uneven heat distribution on the roller surface. In addition, due to the long flow time of the heating oil, the temperature rise rate of the roller will be slow when it starts, and the hot oil flow channel inside the heating roller is designed to be spiral. When there are impurities in the heat transfer oil, it is easy to cause the oil channel to be blocked and form a large dirt thermal resistance, thereby affecting the normal use of the heating roller. Utility Model Content

[0005] Based on this, it is necessary to provide a battery electrode hot rolling roller to solve the technical problems in the prior art that the hot rolling roller has a slow heating speed and is easily blocked.

[0006] To achieve the above-mentioned purpose, the present application provides a battery pole piece hot rolling roller, which comprises:

[0007] Roller;

[0008] A roller sleeve is sleeved on the roller shaft, the roller sleeve and the roller shaft are coaxially arranged, and a first gap is formed between the roller sleeve and the roller shaft;

[0009] a first cover body, which is arranged to cover one end of the roller sleeve, and a second gap is formed between the first cover body and the end surface of the roller shaft;

[0010] a second cover body, which is arranged to cover the other end of the roller sleeve, and a third gap is formed between the second cover body and the end surface of the roller shaft;

[0011] n flow channels are provided between the roller shaft and the roller sleeve, the first cover body, and the second cover body, the n flow channels are separated from each other, and are used for the flow of fluid medium. The flow channels pass through the second gap, the first gap, and the third gap in sequence, and the portion of the flow channel in the first gap is spiral;

[0012] A first rotating shaft passes through the first cover and is connected to the roller shaft. A liquid inlet channel is provided in the first rotating shaft. The liquid inlet channel is provided with n liquid inlets corresponding to the n flow channels.

[0013] a second rotating shaft, passing through the second cover and connected to the roller shaft; a liquid outlet channel is provided in the second rotating shaft; and n liquid outlets are provided in the liquid outlet channel in a one-to-one correspondence with the n flow channels; and

[0014] The filter bucket is arranged in the liquid inlet channel.

[0015] Optionally, the battery electrode hot rolling roller further includes n partition ribs for forming n flow channels, the n partition ribs separate the n liquid inlets from each other, and the n partition ribs separate the n liquid outlets from each other, and the partition ribs include:

[0016] Two baffles are respectively arranged in the second gap and the third gap; and

[0017] A spiral plate is arranged in the first gap, and two baffles are respectively connected to two ends of the spiral plate.

[0018] Optionally, the baffle comprises:

[0019] a straight plate, arranged in the second gap or the third gap along the radial direction of the roller shaft; and

[0020] The arc plate is arranged along the circumference of the roller shaft, and its two ends are respectively connected to the straight plate and the corresponding spiral plate. The arc plate is used to separate the first gap and the second gap, or to separate the first gap and the third gap.

[0021] Optionally, a mounting rib is provided in the liquid inlet channel, and the filter hopper includes:

[0022] Filters; and

[0023] The annular rib is arranged along the edge of the filter screen and abuts against the mounting rib.

[0024] Optionally, the filter screen is recessed relative to the annular rib toward the liquid inlet to form a bag body.

[0025] Optionally, the filter is made of stainless steel.

[0026] Optionally, four flow channels are provided.

[0027] Optionally, the fluid medium is thermal oil.

[0028] The beneficial effect of the battery electrode hot rolling roller provided by the present application is that: compared with the prior art, the battery electrode hot rolling roller of the present application includes a roller shaft, a roller sleeve, a first cover body, a second cover body, n flow channels, a first rotating shaft, a second rotating shaft and a filter bucket, a first gap is formed between the roller sleeve and the roller shaft, a second gap is formed between the first cover body and the roller shaft, and a third gap is formed between the second cover body and the roller shaft, n flow channels are provided and separated from each other, and the part of the flow channel in the first gap is spiral, thereby ensuring that the fluid medium is in full and uniform contact with the roller shaft and the roller sleeve, and reducing the temperature difference on the surface of the roller sleeve; a filter bucket is provided in the liquid inlet channel of the first rotating shaft, which can filter the fluid medium entering the flow channel, prevent impurities in the fluid medium from entering the flow channel and blocking the flow channel, ensure the normal circulation of the fluid medium, ensure the normal use of the hot rolling roller, and reduce the dirt thermal resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a battery electrode hot rolling roller provided in an embodiment of the present application;

[0031] Figure 2 Schematic diagram of the internal structure of the battery pole hot rolling roller provided in the embodiment of the present application Figure 1 ;

[0032] Figure 3 Schematic diagram of the internal structure of the battery pole hot rolling roller provided in the embodiment of the present application Figure 2 ;

[0033] Figure 4 Schematic diagram of the internal structure of the battery pole hot rolling roller provided in the embodiment of the present application Figure 3 ;

[0034] Figure 5 Schematic diagram of the internal structure of the first rotating shaft of the battery electrode hot rolling roller provided in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Roller; 2. Roller sleeve; 3. First cover; 4. Second cover; 5. Flow channel; 6. First rotating shaft; 610. Liquid inlet channel; 620. Liquid inlet; 630. Mounting rib; 7. Second rotating shaft; 720. Liquid outlet; 8. Filter hopper; 810. Filter screen; 820. Annular rib; 9. Partition rib; 910. Baffle; 911. Straight plate; 912. Arc plate; 920. Spiral plate. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0043] The embodiment of the present application provides a battery electrode hot rolling roller, please refer to Figures 1 to 5 The battery electrode hot rolling roller includes a roller shaft 1, a roller sleeve 2, a first cover 3, a second cover 4, n flow channels 5, a first rotating shaft 6, a second rotating shaft 7 and a filter 8. The roller sleeve 2 is sleeved on the roller shaft 1, and the roller sleeve 2 and the roller shaft 1 are coaxially arranged. A first gap is formed between the roller sleeve 2 and the roller shaft 1; the first cover 3 is covered on one end of the roller sleeve 2, and a second gap is formed between the first cover 3 and the end face of the roller shaft 1; the second cover 4 is covered on the other end of the roller sleeve 2, and a third gap is formed between the second cover 4 and the end face of the roller shaft 1; n flow channels 5 are arranged between the roller shaft 1 and the roller sleeve 2, the first cover 3, and the second cover 4, and the n flow channels 5 are mutually connected. They are separated from each other, and the flow channel 5 is used to supply the fluid medium to flow. The flow channel 5 passes through the second gap, the first gap and the third gap in sequence, and the part of the flow channel 5 in the first gap is spiral; the first rotating shaft 6 passes through the first cover body 3 and is connected to the roller shaft 1, and a liquid inlet channel 610 is provided in the first rotating shaft 6, and the liquid inlet channel 610 is provided with n liquid inlets 620 corresponding to the n flow channels 5 in a one-to-one manner; the second rotating shaft 7 passes through the second cover body 4 and is connected to the roller shaft 1, and a liquid outlet channel is provided in the second rotating shaft 7, and the liquid outlet channel is provided with n liquid outlets 720 corresponding to the n flow channels 5 in a one-to-one manner, and the filter bucket 8 is provided in the liquid inlet channel 610.

[0044] In an embodiment of the present application, the battery electrode hot rolling roller includes a roller shaft 1, a roller sleeve 2, a first cover body 3, a second cover body 4, n flow channels 5, a first rotating shaft 6, a second rotating shaft 7 and a filter bucket 8. A first gap is formed between the roller sleeve 2 and the roller shaft 1, a second gap is formed between the first cover body 3 and the roller shaft 1, and a third gap is formed between the second cover body 4 and the roller shaft 1. The flow channels 5 are provided with n strips and are separated from each other. The portion of the flow channel 5 in the first gap is spiral, thereby ensuring that the fluid medium is in full and uniform contact with the roller shaft 1 and the roller sleeve 2, and reducing the temperature difference on the surface of the roller sleeve 2; a filter bucket 8 is provided in the liquid inlet channel 610 of the first rotating shaft 6, which can filter the fluid medium entering the flow channel 5 to prevent impurities in the fluid medium from entering the flow channel and blocking the flow channel 5, thereby ensuring the normal circulation of the fluid medium, ensuring the normal use of the hot rolling roller, and reducing the dirt thermal resistance.

[0045] In one embodiment, please refer to Figures 2 to 4 The battery electrode hot rolling roller also includes n partition edges 9 for forming n flow channels 5. The n partition edges 9 separate the n liquid inlets 620 from each other, and the n partition edges 9 separate the n liquid outlets 720 from each other. The partition edges 9 include two baffles 910 and a spiral plate 920. The two baffles 910 are respectively arranged in the second gap and the third gap, and a spiral plate 920 is arranged in the first gap. The two baffles 910 are respectively connected to the two ends of the spiral plate 920 to achieve mutual separation between the various flow channels 5.

[0046] In one embodiment, please refer to Figure 3 and Figure 4 The baffle 910 includes a straight plate 911 and an arc plate 912. The straight plate 911 is arranged in the second gap or the third gap along the radial direction of the roller shaft 1, and the arc plate 912 is arranged along the circumferential direction of the roller shaft 1. The two ends of the arc plate 912 are respectively connected to the straight plate 911 and the corresponding spiral plate 920. The arc plate 912 is used to separate the first gap and the second gap, or to separate the first gap and the third gap.

[0047] Specifically, two adjacent arc plates 912 are spaced apart to facilitate the fluid medium in the flow channel 5 in the second gap to flow into the flow channel 5 in the first gap, or the fluid medium in the flow channel 5 in the first gap to flow into the flow channel 5 in the third gap.

[0048] In one embodiment, see Figure 5 An installation rib 630 is provided in the liquid inlet channel 610, and the filter bucket 8 includes a filter screen 810 and an annular rib 820. The annular rib 820 is provided along the edge of the filter screen 810. Since the fluid medium always flows toward the liquid inlet 620 in the liquid inlet channel 610, the annular rib 820 always abuts against the installation rib 630, thereby realizing the limiting fixation of the filter bucket 8.

[0049] In one embodiment, see Figure 5 The filter screen 810 is recessed relative to the annular rib 820 toward the liquid inlet 620 to form a bag body, which can filter more impurities and reduce the replacement frequency of the filter bucket 8.

[0050] In one embodiment, the filter screen 810 is made of stainless steel, which has strong corrosion resistance.

[0051] Optionally, the filter screen 810 may be a flexible steel wire structure or a rigid steel plate structure, which is not limited here.

[0052] In one embodiment, please refer to Figures 2 to 4 , there are four flow channels 5.

[0053] In one embodiment, the fluid medium is thermal oil.

[0054] In other embodiments, the fluid medium may also be a refrigerant according to actual temperature requirements.

[0055] In one embodiment, the fluid medium of the second rotating shaft 7 flows back to the first rotating shaft 6 through the circulation pipeline, thereby realizing the recycling of the thermal oil and reducing costs; a heating device for heating the thermal oil is provided in the circulation pipeline to reheat the thermal oil and ensure that the temperature of the thermal oil entering the flow channel 5 meets the standard.

[0056] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery pole piece hot rolling roller, characterized in that: include: Roller; a roller sleeve, sleeved on the roller shaft, the roller sleeve and the roller shaft being coaxially arranged, and a first gap being formed between the roller sleeve and the roller shaft; a first cover body, which is arranged to cover one end of the roller sleeve, and a second gap is formed between the first cover body and the end surface of the roller shaft; a second cover body, which is arranged to cover the other end of the roller sleeve, and a third gap is formed between the second cover body and the end surface of the roller shaft; n flow channels are provided between the roller shaft and the roller sleeve, the first cover, and the second cover, the n flow channels being separated from each other and used for allowing a fluid medium to flow, the flow channels sequentially passing through the second gap, the first gap, and the third gap, and the portion of the flow channel in the first gap is spiral; a first rotating shaft, passing through the first cover and connected to the roller shaft, wherein a liquid inlet channel is provided in the first rotating shaft, and the liquid inlet channel is provided with n liquid inlets corresponding to the n flow channels; a second rotating shaft, passing through the second cover and connected to the roller shaft, wherein a liquid outlet channel is provided in the second rotating shaft, and n liquid outlets are provided in the liquid outlet channel in a one-to-one correspondence with the n flow channels; and The filter bucket is arranged in the liquid inlet channel.

2. The battery pole piece hot rolling roller according to claim 1, characterized in that: The battery electrode hot rolling roller further includes n partition edges for forming n flow channels, wherein the n partition edges separate the n liquid inlets from each other, and the n partition edges separate the n liquid outlets from each other, and the partition edges include: two baffles, respectively disposed in the second gap and the third gap; and A spiral plate is arranged in the first gap, and the two baffles are respectively connected to two ends of the spiral plate.

3. The battery pole piece hot rolling roller according to claim 2, characterized in that: The baffle comprises: a straight plate, arranged in the second gap or the third gap along the radial direction of the roller shaft; and An arc plate is arranged along the circumference of the roller shaft, and both ends of the arc plate are respectively connected to the straight plate and the corresponding spiral plate. The arc plate is used to separate the first gap and the second gap, or to separate the first gap and the third gap.

4. The battery pole sheet hot rolling roller according to any one of claims 1 to 3, characterized in that: The liquid inlet channel is provided with a mounting rib, and the filter bucket comprises: Filters; and An annular rib is arranged along the edge of the filter screen, and the annular rib abuts against the installation rib.

5. The battery pole piece hot rolling roller according to claim 4, characterized in that: The filter screen is recessed relative to the annular rib toward the liquid inlet to form a bag body.

6. The battery pole piece hot rolling roller according to claim 4, characterized in that: The filter screen is made of stainless steel.

7. The battery pole piece hot rolling roller according to any one of claims 1 to 3, characterized in that: There are four flow channels.

8. The battery pole piece hot rolling roller according to any one of claims 1 to 3, characterized in that: The fluid medium is heat transfer oil.

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